Automatically populate FormRequest class properties

[KJLJon]

Has anyone looked into populate FormRequest properties from the safe attributes? I think this would be helpful for both type hinting and using property based interfaces (new in php 8.4) into services

NOTE: something like this can be done in userland, but I could see how it would be useful for others to use:

New Interface

interface PopulatesWhenResolved
{
    /**
     * populates the properties of the given class instance.
     *
     * @return void
     */
    public function populateResolved(): void;
}

New Trait

trait PopulatesWhenResolvedTrait
{
    /**
     * Populates the class properties.
     *
     * @return void
     */
    public function populateResolved()
    {
        $reflect = new ReflectionClass($this);
        $props = $reflect->getProperties(ReflectionProperty::IS_PUBLIC);

        $safe = $this->safe();
        foreach($props as $prop) {
            $key = $prop->name;
            if (array_key_exists($key, $safe)) {
                $this->{$key} = $safe[$key];
            }
        }
    }
}

Inside a ServiceProvider::boot():

$this->app->afterResolving(PopulatesWhenResolved::class, function ($resolved) {
    $resolved->populateResolved();
});

Usage example (showing example with php 8.4 property interface)

create my value object interface

interface FooDTO {
    public string $foo { get; }
}

create my request class

class TestRequest extends FormRequest implements PopulatesWhenResolved, FooDTO {
    use PopulatesWhenResolvedTrait;

    public string $foo;

    public function rules()
    {
        return [
            'foo' => 'string|required',
        ];
    }
}

[KJLJon]

Here is an example of what the code update could look like a6f5b87

I can create a MR if requested.